Alex Behm ecda49f3e3 IMPALA-5381: Adds DEFAULT_JOIN_DISTRIBUTION_MODE query option. ...

Adds a new query option DEFAULT_JOIN_DISTRIBUTION_MODE to
control which join distribution mode is chosen when the join
inputs have an unknown cardinality (e.g., missing stats) or when
the expected costs of the different strategies are equal.

Values for DEFAULT_JOIN_DISTRIBUTION_MODE: [BROADCAST, SHUFFLE]
Default: BROADCAST

Note that this change effectively undoes IMPALA-5120.

Testing:
- Added new planner tests
- Core/hdfs run passed

Change-Id: Ibd34442f422129d53bef5493fc9cbe7375a0765c
Reviewed-on: http://gerrit.cloudera.org:8080/7059
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: Impala Public Jenkins

2017-06-04 08:11:53 +00:00

..

queries/PlannerTest

IMPALA-5381: Adds DEFAULT_JOIN_DISTRIBUTION_MODE query option.

2017-06-04 08:11:53 +00:00

functional-planner_core.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_dimensions.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_exhaustive.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00

functional-planner_pairwise.csv

Update benchmark tests to run against generic workload, data loading with scale factor, +more

2014-01-08 10:44:22 -08:00